Color

#558b87

#558b87
hex#558b87
rgbrgb(85, 139, 135)
hslhsl(176, 24%, 44%)
oklchoklch(0.598 0.058 189.7)
Closest name: Highlands (#449084)Relative luminance 0.2215

Colors that go with #558b87

Charcoal, Copper and Blush Pink lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Real palettes that use #558b87

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#8b5559

#558b6d · #55748b

#88558b · #8b8855

Split-complementary

Open in tool →

#8b5574 · #8b6d55

#6d558b · #8b5559 · #748b55

Contrast

#558b87 as textRatioAAAA largeAAAFix
Aaon white
3.87:1failpassfail
  • AA: use #4e7e7b as the text (4.57:1)
  • AAA: use #3a5f5c as the text (7.07:1)
  • AA: or shift the background to #171717 (4.63:1)
Aaon black
5.43:1passpassfail
  • AAA: use #64a09c as the text (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #558b87 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

mcpConnect your agent — build around #558b87
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #558b87 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/558b87-a2bdbe-d4599d-1f282d-e9f1ed?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md